Without doing a comprehensive fact check on your question: How many of the SS concentration camps were not actually in Germany? My answer is: The vast majority!

You have to remember that Germany as a “unified” political entity did not exist until 1871, when Otto von Bismark unified the northern Germanic states under the predominance of the king of Prussia (who then became the Emperor of Germany). Until then, the Germanic states was just a conglomeration of increasingly fractured countries (due to inheritance splitting) ruled by kings, dukes, counts, earls and even barons. These rulers would get together and elect an “emperor” to defend against outside enemies.

By the late middle ages the power was shifting from the Mediterranean Sea into the Alps. And the “Holy Roman Empire” had moved its power center from Rome to Vienna.

After the reformation of 1495 and the ensuing counter-reformation the “Latin” kingdoms (Spain, France and Portugal), dominated by the Church of Rome, focused on the conquest of the West Indian and East India with conversion to Christianity at gun-point. And thus the permeation of the Catholic doctrine and practice with vast chunks of tribal and pagan religion, elements and practices. The Catholic faith, as practiced by over 80% of the inhabitants of Paraguay has a lot more in common with the ancient tribal religions than with what is written in the Bible.

But back to Central Europe. The Germanic states where led by the Kingdoms of Austria, Bavaria, Hanover and Prussia. Until Victoria ascended to the throne, the King of Hanover was also the King of England. And the “English” kings were more fluent in German than in English. By the 1700s it had become tradition that the King of Austria (who was also the King of Hungary) was also elected and proclaimed as the “Holy Roman Emperor”. This made the other Germanic rulers jealous, virtually bankrupted them for trying to one-up the pomp of Vienna and eventually lead to the creation of the German Empire under Prussia to counter-balance the Austrian Empire.

The territory of the Austrian Empire included beyond Austria itself big parts of what today is Czechia, Slovakia, Hungary, Serbia, Bosnia, Croatia, Slovenia and north-eastern Italy. The whole west bank of the Rhine river has historically been considered German territory, and belonged to the German Empire. As well as the Baltic coast up to Lithuania, the borderlands between Poland and Czechia, and going around Slovakia into western Ukraine and Moldova. The city of Odessa was considered a German city. In the south-east the Volga is historically considered the far eastern frontier of German settlements.

After World War 1 the victors (mainly France, but also England and Italy, and to a lesser extent the USA) took away vast territories from both Germany and Austria. Southern Tirol and Trieste went to Italy, the Balkan territories were conglomerated into the artificial new state of Yugoslavia, Hungary and Moldova became independent, Romania grew to the north, Ukraine grew to the west, Czechia and Slovakia became independent, Poland was created from what was mostly Prussian territory, and the west bank of the Rhine was annexed by France.

After the humiliation of the peace treaty, where Germany (and Austria) had been deliberately excluded from the negotiations, and the financial ruin imposed by reparations, is it any surprise that Hitler tried to restore the historical Germanic territories?

There were concentration camps all over the German fatherland, as well as through most of the occupied territory. As to the extermination camps established as part of the “final solution”. Even though all six are now in polish territory, only the three easternmost were in territory that could not be considered as traditionally or historically German.

After World War 2, Russia expanded its borders west by annexing territories from Belarus and Ukraine. As compensation it granted them territories that had belonged to Poland and Germany. And Poland was compensated by the southern half of East Prussia and a huge tract of eastern frontier of the German core territory. Russia also instigated an ethnic cleansing by expelling all inhabitants from the the territories it annexed, and telling them to go and loot and cleanse the former German territories along their own western frontiers. Many families had to flee overnight for their lives and lost everything to expropriation without any due process.

In the final treaty of World War 2, signed 45 years after the so-called Victory in Europe, the German state accepted the borders as they existed in 1990. This so-called Two-plus-Four treaty was complemented by the Polish-German Border Treaty signed later that same year, putting an end [finally] to World War 2 in Europe.

What the Arabs (and Palestinians) have been doing in the Middle East, and what Putin is doing in Eastern Europe, is exactly the same thing that Hitler tried to do in Germany between 1933 and 1945: Restore the territorial borders to a state that existed at some time in the past. And unfortunately the beacon of liberty and equality that has been a beacon of great hope for many people for centuries, but especially for over sixty years since the end of World War 2 has become greatly tarnished.

Those who refuse to study history, and learn from history, are bound to repeat the errors made in history. Often to a greater extent and with far worse consequences.